# Sid Kapoor

Smart contract & backend engineer

<figure class="hero"><video src="hero.mp4" poster="hero.jpg" width="1024" height="332" autoplay muted loop playsinline preload="auto" aria-label="Guts, his cloak blowing in the wind, animated from a Berserk panel by Kentaro Miura"></video></figure>

I build DeFi contracts and the backend behind them: launchpads, prediction-market RFQs, relayers, stablecoins. 3+ years, mostly at IQ Industries.

[X](https://x.com/coding_sid) · [GitHub](https://github.com/SidharthK2) · [LinkedIn](https://www.linkedin.com/in/sid-kapoor-web3/) · [Email](mailto:sidharthkapoor.100@gmail.com)

## now

- **Impulse** *(in progress)*: leveraged perps on any asset, with auto-deleveraging as the only backstop. Paper-trading exchange included.
- **Peg liquidity + hedging** *(in development, at IQ)*: holds order-book liquidity around a peg and hedges the exposure on Polymarket.

## shipped

### IQ AI: token-launch platform

**$2M+ TVL** · **3 EVM chains** · in production for **~18 months**

One of the main engineers: token deployment, DEX integrations, liquidity migration, and LayerZero OFT deploys.

### Prediction-market parlays: RFQ + gasless relayer

EIP-712 · Redis · WebSockets · PostgreSQL

Built the RFQ flow from maker quotes to signed trade terms, plus parts of the EIP-712 gasless relayer that executes them.

### KRWQ: KRW stablecoin

**KRW 1B+** on-chain volume · in production

Tests, deployments and keeper services.

## building

### Aquifer

Cross-venue prediction-market terminal · work in progress

Prediction markets and liquidity from multiple venues in one terminal. Makers quote across venues through one RFQ integration.

### IQLend: leverage on a token with no oracle

Solidity · Foundry · Morpho Blue · Curve · Fraxswap

Built solo. Leveraged longs and shorts on $IQ, using a Fraxswap TWAP oracle and flash-loan-assisted open and close.

### [noctua](https://github.com/SidharthK2/noctua): intent-based fixed-rate lending

Solidity · Foundry · TypeScript · in progress

Fixed-term loans as EIP-712 intents, matched off-chain and settled on-chain.

### [MatchPulse](https://github.com/SidharthK2/matchpulse): live sports markets on Solana

Anchor · TypeScript · TxODDS hackathon

Halftime betting markets priced from real odds and settled trustlessly with Merkle proofs.

## stack

- **Contracts:** Solidity, EVM, EIP-712 signed execution, Foundry (fork, fuzz, invariant, integration tests), Slither, Tenderly
- **DeFi:** AMM liquidity and migration, RFQs, lending and liquidations, protocol accounting, TWAP oracles, MEV
- **Backend:** TypeScript, Node.js, Rust, NestJS, PostgreSQL, Redis, BullMQ, WebSockets, Docker, AWS
- **Observability:** Prometheus, Grafana, Better Stack, OpenTelemetry

## background

- **IQ Industries:** smart contract & backend engineer, August 2023 to present, remote
- **ETHGlobal Paris 2023:** Worldcoin Prize, for a ZK-proof identity verification project for DAO governance

## say hi

Hiring for smart contracts or backend? [Email me](mailto:sidharthkapoor.100@gmail.com) or reach out on Discord: **0x_snake**.

To follow what I'm building, I'm on X at [@coding_sid](https://x.com/coding_sid).